<template>
  <div>
    <el-row>
      <h4>
        <b>审批人设置</b>
      </h4>
      <el-radio-group v-model="dataType" @change="changeDataType">
        <el-radio label="USERS">指定用户</el-radio>
        <el-radio label="ROLES">角色</el-radio>
        <el-radio label="DEPTS">组织</el-radio>
        <el-radio label="INITIATOR">发起人</el-radio>
      </el-radio-group>
    </el-row>
    <el-row>
      <div v-if="dataType === 'USERS'">
        <el-tag v-for="userText in selectedUser.text" :key="userText" effect="plain">{{ userText }}</el-tag>
        <div class="element-drawer__button">
          <el-button size="mini" type="primary" icon="el-icon-plus" @click="onSelectUsers()">添加用户</el-button>
        </div>
      </div>
      <div v-if="dataType === 'ROLES'">
        <el-select v-model="roleIds" multiple size="mini" placeholder="请选择 角色" @change="changeSelectRoles">
          <el-option v-for="item in roleOptions" :key="item.roleId" :label="item.roleName" :value="`ROLE${item.roleId}`" :disabled="item.status === 1"></el-option>
        </el-select>
      </div>
      <div v-if="dataType === 'DEPTS'">
        <tree-select :width="320" :height="400" size="mini" :data="deptTreeData" :defaultProps="deptProps" multiple clearable checkStrictly nodeKey="id" :checkedKeys="deptIds" @change="checkedDeptChange"></tree-select>
      </div>
    </el-row>
    <el-row>
      <div v-show="showMultiFlog">
        <el-divider />
        <h4>
          <b>多实例审批方式</b>
        </h4>
        <el-row>
          <el-radio-group v-model="multiLoopType" @change="changeMultiLoopType()">
            <el-row>
              <el-radio label="Null">无</el-radio>
            </el-row>
            <el-row>
              <el-radio label="SequentialMultiInstance">会签（需所有审批人同意）</el-radio>
            </el-row>
            <el-row>
              <el-radio label="ParallelMultiInstance">或签（一名审批人同意即可）</el-radio>
            </el-row>
          </el-radio-group>
        </el-row>
        <el-row v-if="multiLoopType !== 'Null'">
          <el-tooltip content="开启后，实例需按顺序轮流审批" placement="top-start" @click.stop.prevent>
            <i class="header-icon el-icon-info"></i>
          </el-tooltip>
          <span class="custom-label">顺序审批：</span>
          <el-switch v-model="isSequential" @change="changeMultiLoopType()" />
        </el-row>
      </div>
    </el-row>

    <!-- 候选用户弹窗 -->
    <jy-dialog title="候选用户" :visible.sync="userOpen" width="60%" append-to-body>
      <el-row type="flex" :gutter="20">
        <!--组织数据-->
        <el-col :span="7">
          <el-card shadow="never" style="height: 100%">
            <div slot="header">
              <span>组织列表</span>
            </div>
            <div class="head-container">
              <el-input v-model="deptName" placeholder="请输入组织名称" clearable size="small" prefix-icon="el-icon-search" style="margin-bottom: 20px" />
              <el-tree :data="deptOptions" :props="deptProps" :expand-on-click-node="false" :filter-node-method="filterNode" ref="tree" default-expand-all @node-click="handleNodeClick" />
            </div>
          </el-card>
        </el-col>
        <el-col :span="17">
          <el-table border stripe ref="multipleTable" height="600" :data="userTableList" @selection-change="handleSelectionChange">
            <el-table-column type="selection" width="50" align="center" />
            <el-table-column label="用户名" align="center" prop="nickName" />
            <el-table-column label="组织" align="center" prop="dept.deptName" />
          </el-table>
          <pagination :total="userTotal" :page.sync="queryParams.pageNum" :limit.sync="queryParams.pageSize" @pagination="getUserList" />
        </el-col>
      </el-row>
      <div slot="footer" class="dialog-footer">
        <el-button size="small" type="primary" @click="handleTaskUserComplete">确 定</el-button>
        <el-button size="small" @click="userOpen = false">取 消</el-button>
      </div>
    </jy-dialog>
  </div>
</template>

<script>
import { listUser, deptTreeSelect } from "@/api/system/user";
import { listRole } from "@/api/system/role";
import TreeSelect from "@/components/TreeSelect";

const userTaskForm = {
  dataType: "",
  assignee: "",
  candidateUsers: "",
  candidateGroups: "",
  text: ""
  // dueDate: '',
  // followUpDate: '',
  // priority: ''
};

export default {
  name: "UserTask",
  props: {
    id: String,
    type: String
  },
  components: { TreeSelect },
  data() {
    return {
      loading: false,
      dataType: "USERS",
      selectedUser: {
        ids: [],
        text: []
      },
      userOpen: false,
      deptName: undefined,
      deptOptions: [],
      deptProps: {
        children: "children",
        label: "label"
      },
      deptTempOptions: [],
      userTableList: [],
      userTotal: 0,
      selectedUserDate: [],
      roleOptions: [],
      roleIds: [],
      deptTreeData: [],
      deptIds: [],
      // 查询参数
      queryParams: {
        deptId: undefined
      },
      showMultiFlog: false,
      isSequential: false,
      multiLoopType: "Null"
    };
  },
  watch: {
    id: {
      immediate: true,
      handler() {
        this.bpmnElement = window.bpmnInstances.bpmnElement;
        this.$nextTick(() => this.resetTaskForm());
      }
    },
    // 根据名称筛选组织树
    deptName(val) {
      this.$refs.tree.filter(val);
    }
  },
  beforeDestroy() {
    this.bpmnElement = null;
  },
  methods: {
    resetTaskForm() {
      const bpmnElementObj = this.bpmnElement?.businessObject;
      if (!bpmnElementObj) {
        return;
      }
      this.clearOptionsData();
      this.dataType = bpmnElementObj["dataType"];
      if (this.dataType === "USERS") {
        let userIdData = bpmnElementObj["candidateUsers"] || bpmnElementObj["assignee"];
        let userText = bpmnElementObj["text"] || [];
        if (userIdData && userIdData.toString().length > 0 && userText && userText.length > 0) {
          this.selectedUser.ids = userIdData?.toString().split(",");
          this.selectedUser.text = userText?.split(",");
        }
        if (this.selectedUser.ids.length > 1) {
          this.showMultiFlog = true;
        }
      } else if (this.dataType === "ROLES") {
        this.getRoleOptions();
        let roleIdData = bpmnElementObj["candidateGroups"] || [];
        if (roleIdData && roleIdData.length > 0) {
          this.roleIds = roleIdData.split(",");
        }
        this.showMultiFlog = true;
      } else if (this.dataType === "DEPTS") {
        this.getDeptTreeData().then(() => {
          let deptIdData = bpmnElementObj["candidateGroups"] || [];
          if (deptIdData && deptIdData.length > 0) {
            this.deptIds = deptIdData.split(",");
          }
        });
        this.showMultiFlog = true;
      }
      this.getElementLoop(bpmnElementObj);
    },
    /**
     * 清空选项数据
     */
    clearOptionsData() {
      this.selectedUser.ids = [];
      this.selectedUser.text = [];
      this.roleIds = [];
      this.deptIds = [];
    },
    /**
     * 跟新节点数据
     */
    updateElementTask() {
      const taskAttr = Object.create(null);
      for (let key in userTaskForm) {
        taskAttr[key] = userTaskForm[key];
      }
      window.bpmnInstances.modeling.updateProperties(this.bpmnElement, taskAttr);
    },
    /**
     * 查询组织下拉树结构
     */
    getDeptOptions() {
      return new Promise((resolve, reject) => {
        if (!this.deptOptions || this.deptOptions.length <= 0) {
          deptTreeSelect().then((response) => {
            this.deptTempOptions = response.data;
            this.deptOptions = response.data;
            resolve();
          });
        } else {
          reject();
        }
      });
    },
    /**
     * 查询组织下拉树结构（含组织前缀）
     */
    getDeptTreeData() {
      function refactorTree(data) {
        return data.map((node) => {
          let treeData = { id: `DEPT${node.id}`, label: node.label, parentId: node.parentId, weight: node.weight };
          if (node.children && node.children.length > 0) {
            treeData.children = refactorTree(node.children);
          }
          return treeData;
        });
      }
      return new Promise((resolve, reject) => {
        if (!this.deptTreeData || this.deptTreeData.length <= 0) {
          this.getDeptOptions()
            .then(() => {
              this.deptTreeData = refactorTree(this.deptOptions);
              resolve();
            })
            .catch(() => {
              reject();
            });
        } else {
          resolve();
        }
      });
    },
    /**
     * 查询组织下拉树结构
     */
    getRoleOptions() {
      if (!this.roleOptions || this.roleOptions.length <= 0) {
        listRole().then((response) => (this.roleOptions = response.rows));
      }
    },
    /** 查询用户列表 */
    getUserList() {
      listUser(this.addDateRange(this.queryParams, this.dateRange)).then((response) => {
        this.userTableList = response.rows;
        this.userTotal = response.total;
      });
    },
    // 筛选节点
    filterNode(value, data) {
      if (!value) return true;
      return data.label.indexOf(value) !== -1;
    },
    // 节点单击事件
    handleNodeClick(data) {
      this.queryParams.deptId = data.id;
      this.getUserList();
    },
    // 关闭标签
    handleClose(tag) {
      this.selectedUserDate.splice(this.selectedUserDate.indexOf(tag), 1);
      this.$refs.multipleTable.toggleRowSelection(tag);
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.selectedUserDate = selection;
    },
    onSelectUsers() {
      this.selectedUserDate = [];
      this.$refs.multipleTable?.clearSelection();
      this.getDeptOptions();
      this.userOpen = true;
    },
    handleTaskUserComplete() {
      if (!this.selectedUserDate || this.selectedUserDate.length <= 0) {
        this.$modal.msgError("请选择用户");
        return;
      }
      userTaskForm.dataType = "USERS";
      this.selectedUser.text = this.selectedUserDate.map((k) => k.nickName) || [];
      if (this.selectedUserDate.length === 1) {
        let data = this.selectedUserDate[0];
        userTaskForm.assignee = data.userId;
        userTaskForm.text = data.nickName;
        userTaskForm.candidateUsers = null;
        this.showMultiFlog = false;
        this.multiLoopType = "Null";
        this.changeMultiLoopType();
      } else {
        userTaskForm.candidateUsers = this.selectedUserDate.map((k) => k.userId).join() || null;
        userTaskForm.text = this.selectedUserDate.map((k) => k.nickName).join() || null;
        userTaskForm.assignee = null;
        this.showMultiFlog = true;
      }
      this.updateElementTask();
      this.userOpen = false;
    },
    changeSelectRoles(val) {
      let groups = null;
      let text = null;
      if (val && val.length > 0) {
        userTaskForm.dataType = "ROLES";
        groups = val.join() || null;
        let textArr = this.roleOptions.filter((k) => val.indexOf(`ROLE${k.roleId}`) >= 0);
        text = textArr?.map((k) => k.roleName).join() || null;
      } else {
        userTaskForm.dataType = null;
        this.multiLoopType = "Null";
      }
      userTaskForm.candidateGroups = groups;
      userTaskForm.text = text;
      this.updateElementTask();
      this.changeMultiLoopType();
    },
    checkedDeptChange(checkedIds) {
      let groups = null;
      let text = null;
      this.deptIds = checkedIds;
      if (checkedIds && checkedIds.length > 0) {
        userTaskForm.dataType = "DEPTS";
        groups = checkedIds.join() || null;
        let textArr = [];
        let treeStarkData = JSON.parse(JSON.stringify(this.deptTreeData));
        checkedIds.forEach((id) => {
          let stark = [];
          stark = stark.concat(treeStarkData);
          while (stark.length) {
            let temp = stark.shift();
            if (temp.children) {
              stark = temp.children.concat(stark);
            }
            if (id === temp.id) {
              textArr.push(temp);
            }
          }
        });
        text = textArr?.map((k) => k.label).join() || null;
      } else {
        userTaskForm.dataType = null;
        this.multiLoopType = "Null";
      }
      userTaskForm.candidateGroups = groups;
      userTaskForm.text = text;
      this.updateElementTask();
      this.changeMultiLoopType();
    },
    changeDataType(val) {
      if (val === "ROLES" || val === "DEPTS" || (val === "USERS" && this.selectedUser.ids.length > 1)) {
        this.showMultiFlog = true;
      } else {
        this.showMultiFlog = false;
      }
      this.multiLoopType = "Null";
      this.changeMultiLoopType();
      // 清空 userTaskForm 所有属性值
      Object.keys(userTaskForm).forEach((key) => (userTaskForm[key] = null));
      userTaskForm.dataType = val;
      if (val === "USERS") {
        if (this.selectedUser && this.selectedUser.ids && this.selectedUser.ids.length > 0) {
          if (this.selectedUser.ids.length === 1) {
            userTaskForm.assignee = this.selectedUser.ids[0];
          } else {
            userTaskForm.candidateUsers = this.selectedUser.ids.join();
          }
          userTaskForm.text = this.selectedUser.text?.join() || null;
        }
      } else if (val === "ROLES") {
        this.getRoleOptions();
        if (this.roleIds && this.roleIds.length > 0) {
          userTaskForm.candidateGroups = this.roleIds.join() || null;
          let textArr = this.roleOptions.filter((k) => this.roleIds.indexOf(`ROLE${k.roleId}`) >= 0);
          userTaskForm.text = textArr?.map((k) => k.roleName).join() || null;
        }
      } else if (val === "DEPTS") {
        this.getDeptTreeData();
        if (this.deptIds && this.deptIds.length > 0) {
          userTaskForm.candidateGroups = this.deptIds.join() || null;
          let textArr = [];
          let treeStarkData = JSON.parse(JSON.stringify(this.deptTreeData));
          this.deptIds.forEach((id) => {
            let stark = [];
            stark = stark.concat(treeStarkData);
            while (stark.length) {
              let temp = stark.shift();
              if (temp.children) {
                stark = temp.children.concat(stark);
              }
              if (id === temp.id) {
                textArr.push(temp);
              }
            }
          });
          userTaskForm.text = textArr?.map((k) => k.label).join() || null;
        }
      } else if (val === "INITIATOR") {
        userTaskForm.assignee = "${initiator}";
        userTaskForm.text = "流程发起人";
      }
      this.updateElementTask();
    },
    getElementLoop(businessObject) {
      if (!businessObject.loopCharacteristics) {
        this.multiLoopType = "Null";
        return;
      }
      this.isSequential = businessObject.loopCharacteristics.isSequential;
      if (businessObject.loopCharacteristics.completionCondition) {
        if (businessObject.loopCharacteristics.completionCondition.body === "${nrOfCompletedInstances >= nrOfInstances}") {
          this.multiLoopType = "SequentialMultiInstance";
        } else {
          this.multiLoopType = "ParallelMultiInstance";
        }
      }
    },
    changeMultiLoopType() {
      // 取消多实例配置
      if (this.multiLoopType === "Null") {
        window.bpmnInstances.modeling.updateProperties(this.bpmnElement, { loopCharacteristics: null, assignee: null });
        return;
      }
      this.multiLoopInstance = window.bpmnInstances.moddle.create("bpmn:MultiInstanceLoopCharacteristics", { isSequential: this.isSequential });
      // 更新多实例配置
      window.bpmnInstances.modeling.updateProperties(this.bpmnElement, {
        loopCharacteristics: this.multiLoopInstance,
        assignee: "${assignee}"
      });
      // 完成条件
      let completionCondition = null;
      // 会签
      if (this.multiLoopType === "SequentialMultiInstance") {
        completionCondition = window.bpmnInstances.moddle.create("bpmn:FormalExpression", { body: "${nrOfCompletedInstances >= nrOfInstances}" });
      }
      // 或签
      if (this.multiLoopType === "ParallelMultiInstance") {
        completionCondition = window.bpmnInstances.moddle.create("bpmn:FormalExpression", { body: "${nrOfCompletedInstances > 0}" });
      }
      // 更新模块属性信息
      window.bpmnInstances.modeling.updateModdleProperties(this.bpmnElement, this.multiLoopInstance, {
        collection: "${multiInstanceHandler.getUserIds(execution)}",
        elementVariable: "assignee",
        completionCondition
      });
    }
  }
};
</script>

<style scoped lang="scss">
  .el-row .el-radio-group {
    margin-bottom: 15px;

    .el-radio {
      line-height: 28px;
    }
  }

  .el-tag {
    margin-bottom: 10px;

    + .el-tag {
      margin-left: 10px;
    }
  }

  .custom-label {
    padding-left: 5px;
    font-weight: 500;
    font-size: 14px;
    color: #606266;
  }
</style>
